
if __name__=="__main__":
    str="Abc"*15
    print(str)
    b=1300000000000000/7
    print("b=%7.2f"%(b))
    s2="nihao,woshilaoliu"
    s2=s2.capitalize()
    print(s2)
    s3=s2.center(34,"#")
    print(s3)
    print(s2.count('a'))
    print(s2.endswith("liu"))

    print(s2.index("laoli"))
    s2=s2.swapcase()
    print(s2)

    s4="渣渣会"
    print(s4.encode())
